Molding-machine.



H. H. HARRIS. MOLDING MACHINE. APPLICATION FILED NGV. 28, 1908.

938,321. Patented 0615.26, 1909.

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H. H. HARRIS. MOLDING MACHINE. APPLICATION FILED Nov. ze, 190e.

Patented 001;. 269 1909.

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Y witnesses NITE) STATES PATENT OFFCE.

HOWARD H. HARRIS, OF ANDERSON, INDIANA.

ivioLnING-MACHINE.

To all whom it 'may concern:

Be it known that I, HOWARD H. HARRIS, a citizen of the United States ofAmerica, residing at Anderson, in the county of Madison and State ofIndiana, have invented new and useful Improvements inll/Iolding-h/lachines, of which the following is a specilication.

This invention relates to molding machines, and one of the principalobjects of the invention is to provide reliable and efficient means forquickly opening and closing the mold box and withdrawing the moldedarticle therefrom.

Another object of the invention is to provide a molding machine formolding hollow building blocks in which a sliding core is used, meansbeing provided for quickly withdrawing the core from the mold box, meansbeing also provided for quickly opening the box, withdrawing the moldedarticle and closing the box as a continuous operation.

These and other objects may be attained by means of the constructionillustrated in the accompanying drawings, in which,-

Figure 1 is a side elevation of a molding machine made in accordancewith my invention, the mold box being shown closed and the cores beingprojected into the box. Fig. 2 is a similar view, showing the coreswithdrawn and the mold box disposed upon its side. Fig. 3 is a top planview of the machine when in condition to receive the molding material.Fig. 4 is a rear elevation of the same. Fig. 5 is a front elevation ofthe same. Fig. 6 is a longitudinal sectional view of the mold box andadjacent parts. Fig. 7 is a detail longitudinal sectional view, show`ing the mold box disposed upon its side. Fig. 8 is a plan view of themold box closed, with the pallet rack removed. Fig. 9 is a similar view,showing the mold box open. Fig. 10 is a detail perspective view of thelatch for holding the hinged parts of the mold box together. Fig. 11 isa det-ail perspective view of the pallet rack.

Referring to the drawings, the numeral 1 designates a suitablesupporting frame for the machine, said frame comprising the side members2 connected together by means of a shaft 3 and by means of a core plate4 which is bolted to the upright portion 5 of the frame. The cores 6 areconnected by means of links 7 to a double yoke 8. The links 7 arepivoted between spaced lugs 9 Specification of Letters Patent.

' Application filed November 28, 1908.

Patented Oct. 26, 1909.

Serial No. 464,909.

formed upon or secured to the rear ends of the cores 6, and the links 7are pivoted between spaced lugs 10 formed on the upper ends of thedouble yoke 8. The lower spaced arms of the yoke 8 are rigidly connectedto the shaft 3, and said shaft is journaled at its ends in the frame ofthe machine. On one end of the shaft 3 is a lever socket 11 in which alever 12 is fitted.

A bracket 13supported at its ends upon the side members 2 of the frameis provided at its upper end with bent portions 14 in which are securedthe outer ends of guide rods 15, the inner ends of said guide rods beingsecured in threaded openings in the core plate 4, said guide rods beingthus supported in horizontal position. A transverse shaft 1G extendsacross and through the lugs 9 and through the links 7, said shaftcarrying a centrally disposed grooved roller 17 which is held in centralposition upon the shaft by means of sleeves 18. The roller 17 isdisposed between the guide rods 15. The core plate 4 is provided withopenings through which the cores G extend, and as the lever 12 isoperated the cores are moved into the'mold box or withdrawn therefrom ina truly horizontal direction, owing to the roller 17 and the guide rods15.

The mold box comprises the bottom 19 upon which the face mold 2O issupported, said bottom being hinged at 21 and the side members 22 hingedat 23. A pallet rack 24 hinged at 25 is provided with offset portions2G, and a pal-let board 27 is supported upon said rack, said palletboard forming one member of the mold box.- The pallet rack is providedwith oppositely disposed notches 28.

A latch 29 provided with a slot 30 near the center thereof has near itsends shoulders 31, 32 and an outwardly projecting handle 33. Connectedto each end member 22 is one of these latches, said latches beingconnected to said members by means of a stud 34 extending through theslot 30, thus permitting the latches to be rocked upon said stud or tobe moved bodily upward. The front shoulder 31 is adapted to engage thenotches 28 in the pallet rack, while the shoulder 32 engages a similarnotch 35 in the core plate 4.

The operation of my invention may be briefly described as follows Themold box being closed, as shown in Fig. 1, and the cores occupying theirpositions in the box, as shown in said figure, the plastic material ispoured into the box and properly tamped.

The operator then withdraws the cores by operating the lever 12; then hegrasps the handles 33 and raises the shoulder 32 out of engagement withthe notches 35 in the core plate and swings the box upon the hinge 25 tothe position shown in Fig. 2. Still holding the handles 33 the latches29 are manipulated to release the shoulders 31 from the notches 28 inthe pallet rack, and the side members 22 are then opened out, as shownin Fig. 9 and shaped back to their original position. The molded blockthen rests upon the pallet block 27 ready to be removed, and theoperator of the machine may still retain his hold upon the handles 33until the pallet rack is connected with the latches and the latchesconnected with the core plate, thus depressing the mold box in positionto receive the molding material for another block fter the cores G havebeen projected into the From the foregoing it will be obvious that amachine made in accordance with my invention is quick in operation, thatthe mold box parts are moved continuously from the molding position tothe releasing position y for withdrawal of the molded articles and backagain to the molding position without releasing the hands from thelatches. In the molding of this class of articles time is an element,and by means of the latching de- Y vices for the mold box and theirmethod of 2. In a molding machine, a mold box, the i sides, the back andfront of which are hinged at their lower edges, and means for openingand closing said mold box, said means comprising latches pivotallymounted upon the side members of the box, said latches each havingoppositely disposed shoulders near their opposite ends, a handleprojecting laterally from each latch, the front and back of the boxbeing provided with slots and shoulders to be engaged by the shoulderson the latches for holding the box closed.

3. In a molding machine, a core plate, cores mounted to move throughsaid plate into the mold box, links pivotally connected to said cores, ayoke connected to said links, a shaft to which said yoke is lixed, alever for rocking said shaft, a grooved roller connected to the cores,guide rods arranged in vertical alinement, said rods being secured atone end to the core plate, and a bracket to which the outer ends of saidrods are connected, said roller mounted to run between said guide rods.

In testimony whereof I allix my signature y in presence of twowitnesses.

HOWARD H. HARRIS. Titnesses CHAs. N. FnrroHLnY, OTTO DELAPLANE.

